Release device for wringers



v May 28, 1940. w. L. KAUFFMAN, I2D

RELEASE DEVICE FOR WRINGBRS 1937 2 Sheets-Sheet l Filed March 1'7.

A TTORNEYS.

May 28, i940. w. 1 KAUFFMAN. 2D 2,202775 RELEASE DEVICE FOR WRINGERSFiled March 17, 1937 2 Sheets-Sheet 2 nm l? www E IN V EN TOR.

A TTORNE YS.

patentes@ @i Q@ Aen Ulti

iinveil Manufacturing (Company, Erie, We., a corporation el?Pennsylvania Application iii/arch il,

ifi Claims.

Power wringers are commonly provided with saiety release mechanisms bywhich the pressure on the rolls may be instantly released. Many of thesedevices eiect a release by releasing the top bar from the frame, and therelease mechanisms in such structures ordinarily involve latchingdevices which may be released to permit the separation oi the top barand with vsuch a separation a release of pressure on the rolls. Such adevice is shown in my former application No. 670,461 dated May 1l, 1933,on which patent issued July 27, 1937, No. 2,087,977, and in somerespects the present invention is an improvement over the structure ofthat application. In that application the release latching mechanismwould not automatically permit the escapement of the engagement parts sothat the resetting could automatically be accomplished withoutmanipulation of the engaging portions of the latching structure. Withthe present invention, while the release may be perfectly eiected, theresetting of the parts after release is accomplished without anymanipulation of the latches through an escapement relation of theseparts. Features and detalls of the invention will appear from thespecification and claims.

A preferred embodiment of the invention is illustrated in theaccompanying drawings as follows:

Fig. 1 shows a front elevation, part being broken away to better showconstruction.

Fig. 2 an enlarged section on the line 2-2 in Fig. 1.

Fig. 3 an enlarged view of the latching end of the top showing thelatching mechanism in set position.

Fig. 4 an enlarged view of the end of the top showing the latchmechanism released, and the parts being in the position formed prior toresetting.

Fig. 5 shows a similar view with the parts in an intermediate positionduring the resetting operation.

The wringer has a frame consisting of a base I, and side stiles 2 and 3.A lower roll 4 and an upper roll 5 are provided, the lower roll having ashaft E journaled in bearings 1, the bearings 1 being arranged in theside stiles. The upper roll 5 has a shaft 8 which operates in bearings 9slidingly mounted in the side stiles. A spring II) rests on the upperbearings and exerts pressure from the top bar II through an adjustingscrew I2, the screw operating through a. nut I3 in the top bar.

A resetting device is arranged for resetting the lliii Serial No.113114333? (fifi. iig-263) pressure on the top bar. This comprises atoggle lever, the actuating lever ifi of which is provided at i5 on thetop bar. A link i@ is pivotally con nected by screw iii with the sidestile il and with the lever i5 by screw il. The lever i5 is channel formand closes over the side stile, and the link i@ is also of channel form,the sides being con nected by plate it. it can be readily seen that asthe lever mechanism is open the end oi the top bar is free to rise fromthe stile, but as the levers are swung to their set position as shown inFig. 1, the top bar is drawn into pressure posiS tion, the leverageincreasing as the pressure on the spring increases.

A release mechanism is provided for the opposite end of the top bar. Alatch member 2@ is provided with a slot 2i which has portions 22 and 23extending each side of a pivot pin 2% when the latch member is in setposition as shown in Figs. 1 and 3. These portions 22 and 23 are prei"-erably inclined with the apex at the set position. The latch member isof channel form hav ing the sides 2M and connecting plate 2Gb. Hooks 25are formed on the sides 20a and are adapted to enter notches 2t in theupper inner corners of the stile 2, the hooks engaging the shouldersformed by the upper end of the notch, the plates having cut-awayportions ,30 to clear the portion of the side stile above the notch.

The latch has a trip finger 2 which is adapted to engage the under-sideof a cross member 28 forming a portion of the trip member. The tripmember retains the latch in set position holding it against the urge forreleasing through the pressure of the main spring I0 and the relation ofthe surfaces of the hooks 25 oi the latch with the upper wall of thenotch 26. The cross member extends through slots 29 in the top andextends into an operating bar 3i at the front and rear of the wringerand forming the operating bars. A companion cross member 28a extendsthrough slots 29a, and the cross member 28 is secured in the operatingmember 3|. The cross members 28 and 28a have cam surfaces 32 which areadapted to engage the ends of the slots 29 and 29a respectively wheneither cross member is moved inwardly, and through this engagement tomove the trip cross plate 28 endwise sumciently to release the finger 21and permit the inner end of the latch to swing upwardly sc as toreleasethe hook 25 and consequently the top bar from the side stile. yThisrelease of the release end of the top bar as it swings up moves thepivot I5 outwardly endwise so as to bring this pivot beyond thealignmentbetween pivots I1 and I0 and thus effects the release of theresetting mechanism and this permits the further opening of the top barto free the wringer rolls from pressure. A spring 33 is secured to thecross plate 28a and yieldingly draws the top member comprising the crossplates 28, 28a and the connecting operating members 3l toward the rightor set position. The cross plate 28 has a lip 34 which forms an inclinedsurface on the upper part of the cross plate 28. A pin 35 extendsthrough an opening 36 in the connecting plate 20D. This pin is providedwith a head 3l, and a spring 38 is tensioned between the head 31 and theconnection plate 20h, thus yieldingly pressing the inner end of thelatch downwardly. As soon as the top moves upwardly and the hook hascleared the upper end of the stile the spring 38 presses down the innerend of the latch, and the iinger 2l operating on the incline 34 crowdsthe latch toward the right suiiiciently to permit the finger to clearthe cross plate 28. The portion of the slot 23 permits the end movementfor this clearance. The downward movement of the inner end of the latchis obstructed by stop 38 riveted on the under-side of the cross plate28. As soon as the inner end of the latch reaches this stop the furtherpressure of the spring 38 pressing downwardly on the latch eiects amovement of the latch toward the left by reason of the inclined orcamming surfaces in the portion 22 of the pivot slot'.

As the top is reset the. bottom of the hook 25 engages the top of thestile. This under-side of the hook has a cam surface 23a which forcesthe Vlatch toward the left so that the hook may clear the inner face ofthe stile. The portion 23 of the pivot slot permits this endwisemovement. 'I'he hook is yieldingly carried into the notch 26 by thepressure of the spring 38 and the camming action of the portion of theslot 23 on the pin 24 thus bringing the parts to the position ofengagement shown in Figs. 1 and- 3, and as the pressure of the mainspring is exerted on the top the pin 24 seeks the upper or apex of theslot retaining the engagement of the hook in the notch and also theposition of the finger 21 under the trip plate 28. It will be noted thatan inward movement of either operating member 3| forces the endwiserelease movement of the trip plate 28. If the operating members 3| arehit toward the ends only one of the cammed surfaces 32 may be broughtinto active operation so as to effect this endwise movement. In anyevent, the operation of operating bar 3| eiects this endwise movementeither through an inner movement of oneof the other cross plates or byboth of them. The endwise yielding of the trip members on trip plate 28through the incline 34 may permit of the resetting of the ngerrelatively to the trip plate but in this case the spring 38 would haveto be of Such stiffness as to overcome the force of the spring 33resisting the endwise movement of the trip plate 28.

-pressure from the top bar; means securing the top bar to and releasingit from the frame at an end of the top bar comprising an unstable latchmember latching the end of the top bar to the frame; a mountingconnecting the latch to the top bar; a trip member retaining the latchmember in set position; a mounting on the top bar for the trip member;and an operating member actuating the trip member, the mountings, latch,and trip members being related to automatically provide for theresetting of the latchV member as the top bar is moved to set position.

2. In a wringer, the combination of a frame comprising a rigid top bar;rolls mounted in the frame; pressure means for the rolls exertingpressure from the top bar; means securing the top bar to and releasingit from the frame at an end of the top bar comprising an unstable latchmember latching the end of the top bar to the frame;

a mounting connecting the latch to the top bar;

a trip member retaining the latch member in set position; a mounting onthe top bar for the trip member; and an operating member actuating thetrip member, the mountings automatically providing for relativemovements of the members for clearing the engaging portions of the latchand trip member with a resetting movement oi.' the top bar.

3. In a wringer, the combination of a frame comprising a rigid top bar;rolls mounted in the frame; pressure means for the rolls exertingpressure from the top bar; means securing the top bar to and releasingit from the frame at an end of the top bar comprising an unstable latchmember latching the end of the top bar to the frame; a mountingconnecting the latch to the top bar; a trip member retaining the latchmember in set position; a mounting on the top bar for the trip member;and an operating member actuating the trip member, the mountingsautomatically providing relative endwise movements of the members forclearing the engaging portions of the latch and trip member with aresetting movement of the top bar.

4. In a wringer, the combination of a frame comprising a rigid top bar;rolls mounted in the frame; pressure means for the rolls exertingpressure from the top bar; means securing the top bar to and releasingit from the frame at an end of the top bar comprising an unstable latchmember pivoted between its ends to the top bar, having a short armsustaining from the pivot the major portion of the pressure at its endof the top bar, and a long arm to which the pressure is communicated; atrip device on the top bar operating on the long arm; and an operatingmember actuating the trip device, the latch and trip member beingrelated to automatically permit the resetting of the top bar and latchmember.

5. In a wringer, the combination of a frame comprising a top bar; rollsmounted in the frame; pressure means for the rolls exerting pressurefrom the top bar; means securing the top bar to and releasing it fromthe frame at an end of the top bar comprising a latch member pivotedthrough a slot and pin connection intermediate its ends to the top barand engaging the stile, said latch having a short arm sustaining fromthe pivot the major portion of the pressure at its end of the top bar,and a long arm to which pressure is communicated; a trip deviceoperating on the long arm; and an operating bar actuating the tripdevice, said slot and pin connection permitting endwise movement of thelatch for automatically clearing the latch relaliti tively to the stileand the trip device in, resetting the latches the top bar is moved toposition.

6. in a wringer, the combination oi a frame comprising a top bar;' rollsmounted in the trarne; pressure means for the rolls exerting pressurefrom the tcp bar; means securing the top to and releasing it from theframe at an end oi the top bar comprising a latch member pivoted througha slot and pin connection intermediate its ends to the top bar andengaging stile, said latch having a short arm sustaining *from the pivotthe maior portion of the pressure at its end of the top bar, and a longarm to which pressure is communicated; a trip device operating on thelong arm; and an operating bar actuating the trip device, said slot andpin connection providing endwise movement ci the latch for automaticclearing oi the latch with relation to the stile and the trip device forresetting oi the latch as the top bar is moved to position, the slotextending each side oi the position oi the pin with the latch in setposition and permitting endwise movement oi' the latch in one directionto clear the trip device, and endwise movement in the opposite directionto clear the frame as the top is moved to position.

7. In a wringer, the combination of a frame comprising a top bar; rollsmounted in the frame; pressure means for the rolls exerting pressurefrom the top bar; means securing the top bar to and releasing it fromthe frame at an end of the top bar, comprising a latch member pivotedthrough a slot and pin connection intermediate its ends to the top barand engaging the stile, said latch having a short arm sustaining fromthe pivot the major portion of the pressure at its end of the top bar,and a long arm to which pressure is communicated; a trip deviceoperating on the long arm; and an operating bar actuating the tripdevice, said slot and pin connection permitting endwise movement of thelatch for automatic resetting of the latch as the top bar is moved toposition, the slot extending each side of the position of the pin withthe latch in set position and permitting endwise movement of the latchin one direction to clear the trip device, and endwise movement in theopposite direction to clear the frame as the'top is moved to position,the sides of the slot being inclined from each other, the force of thepressure means urging the pin to set position at the apex.

8. In a wringer, the combination of a frame comprising a top bar; rollsmounted in the frame; pressure means for the rolls exerting pressurefrom the topbar; means securing the top bar to and releasing it from theframe at an end of the top bar comprising a latch member latching theend of the top bar to the frame; a mounting connecting the latch to thetop bar; a trip member retaining the latch member in set position; amounting for the trip member on the top bar; and an operating memberproviding clearance for the latch in relation to its engagement with thestile and trip device in an engaging movement of said latch endwise ofthe Wringer, the mountings, latch and trip members being related toautomatically permit the resetting of the top bar and the latch member.

9. In a Wringer, the combination of a. frame comprising a top bar; rollsmounted in the frame; pressure means for the rolls exerting pressurefrom the top bar; means securing the top bar to and releasing it fromthe frame at an end u. of the top bar comprising a latch member latchingthe end of the top bar to the frame; a mounting connecting the latch tothe top bar; a trip member retaining the latch member in set position; amounting ior the trip member; an oper ating member actuating the tripmember, the mountings, latch and trip members being related toautomatically provide for the resetting oi the top bar and the iatchmember; and a pressure setting device acting on the top bar at theopposite end oi the wringer from the latch with the latch engaged.

lil. In a wringer, the combination oi a frame, the top bar detachablymounted on the frame; wringer rolls in the frame; mechanism exertingpressure on the rolls from the top bar; means securing the top bar tothe frame comprising a pivoted latch in the form of a lever iulcrumed atthe pivot, said latch forming the latch connection between the top barand the frame and imparting top bar pressure to the pivot of the latchand a trip device securing the latched lever in set position andsubjected to top bar pressure through leverage of the latch, saidsecuring means having its parts related to automatically assume alocking position as the top bar is placed on the frame.

ll. In a Wringer, the combination of a frame, the top bar detachablymounted on the frame; wringer rolls in the frame; mechanism exertingpressure on the rolls from the top bar; means securing the top bar tothe frame comprising a pivoted latch in the form of a lever fulcrumed atthe pivot to said top bar, said latch forming the latch connectionbetween the top bar and the frame and imparting top bar pressure to thepivot of the latch; and a trip device on said top bar securing thelatched lever in set position and subjected to top bar pressure on thelatch, said latch being movable crosswise of the pivotal axis of saidlatch to clear the trip device for resetting- Sii) 12. In a wringer, thecombination of a frame,

the top bar detachably mounted on the frame; Wringer rolls in the frame;mechanism exerting pressure on the rolls from the top bar; meanssecuring the top bar to the frame comprising a pivoted latch `in theform of a lever fulcrumed at the pivot to said top bar, said latchforming the latch connection between the top bar and the frame andimparting top bar pressure to the pivot of the latch; and a trip deviceon sai-d top bar securing the latched lever in set position andsubjected to top bar pressure on the latch, said latch being movablecrosswise of the pivotal axis of said latch to clear the trip device forresetting and automatically returning to normal position relatively tothe axis for setting the latch.

13. In a Wringer, the combination of a frame, the top bar detachablymounted on the frame; wringer rolls in the frame; mechanism exertingpressure on the rolls from the top bar; means securing the top bar tothe frame comprising a. pivoted latch in the form of a lever fulcrumedat the pivot to said top bar, said latch forming the latch connectionbetween the top bar and the frame and imparting top bar pressure to thepivot ofthe latch; and a trip device on said top -bar securing thelatched lever in set position and subjected to top bar pressure on thelatch, said latch being movable crosswise of the pivotal axis of saidlatch to clear the trip device for resetting and automatically returningto normal position relatively to the axis for setting the latch, andautomatically returning the latch to set position under pressure.

14. In a. wringer, the combination of s. frame comprising side Stiles;s. top bei' detechcbly mounted on the frame; wringer rolls in the frame;mechanism exerting pressure on the rolls from the top bar; a tripdevice; means securing the top bar to the frame comprising s. latch pinsecured to the top bar and offset from the inner face of the stile withthe top in position on the stile; and a, latch having a free end engagedby l0 the trip device, seid latch being pivoted on the pin with anelongated inclined slot permitting endwise movement of the latch, saidlatch having u catch shoulder having an inclined surface adapted toengage c. shoulder on the stile, said latch through the location of thepin, the inclination of the slot and the catch shoulder moving the latchendwise to clear the trip device automatically for rea-setting.

Witwen L. mmm. n.

